Yan, Renfei. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 69-77). / Abstract also in Chinese. / ABSTRACT --- p.I / ACKNOWLEDGEMENT --- p.V / LIST OF FIGURES --- p.VI / LIST OF TABLES --- p.VIII / LIST OF ABBREVIATIONS --- p.IX / Chapter CHAPTER 1. --- INTRODUCTION TO BLOOD PRESSURE MEASURING DEVICES AND EVALUATION STANDARDS --- p.1 / Chapter 1.1. --- Current situation on hypertension --- p.1 / Chapter A. --- Prevalence of hypertension --- p.1 / Chapter B. --- Low awareness of hypertension --- p.1 / Chapter 1.2. --- Calls for better management of hypertension --- p.2 / Chapter 1.3. --- Blood pressure measuring devices --- p.3 / Chapter A. --- Conventional devices and their limitations --- p.3 / Chapter B. --- Wearable cuff-less devices --- p.4 / Chapter 1.4. --- Evaluation of the wearable cuff-less devices --- p.6 / Chapter 1.5. --- Objectives of the thesis --- p.7 / Chapter 1.6. --- Structure of the thesis --- p.7 / Chapter CHAPTER 2. --- REVIEW ON CURRENT STANDARDS --- p.8 / Chapter 2.1. --- Introduction to current standards --- p.8 / Chapter A. --- AAMI standard --- p.8 / Chapter B. --- BHS protocol --- p.8 / Chapter C. --- ESH protocol --- p.9 / Chapter 2.2. --- Comparison of current standards --- p.9 / Chapter A. --- Evaluation scope --- p.9 / Chapter B. --- Validation protocol --- p.10 / Chapter C. --- Accuracy criteria --- p.10 / Chapter D. --- Testing reference --- p.13 / Chapter E. --- Recruitment of subjects --- p.13 / Chapter F. --- Ambulatory monitors --- p.14 / Chapter G. --- Special groups of population --- p.15 / Chapter H. --- Statistical considerations --- p.16 / Chapter 2.3. --- Major challenges for the evaluation of cuff-less devices --- p.17 / Chapter A. --- Lack of experimental data --- p.19 / Chapter B. --- Re-examination of the statistical considerations --- p.19 / Chapter C. --- Feature oriented design of the validation protocol --- p.19 / Chapter D. --- Selection of testing reference --- p.79 / Chapter CHAPTER 3. --- ERROR DISTRIBUTION MODEL --- p.21 / Chapter 3.1. --- Distribution assumption in current standards --- p.21 / Chapter 3.2. --- Distribution analysis from published reports --- p.22 / Chapter A. --- Methodology --- p.22 / Chapter B. --- Data analysis --- p.23 / Chapter C. --- Results --- p.23 / Chapter 3.3. --- Distribution analysis on a cuff-less device --- p.29 / Chapter A. --- Experiment --- p.29 / Chapter B. --- Data analysis --- p.31 / Chapter C. --- Results --- p.31 / Chapter 3.4. --- Discussion --- p.33 / Chapter A. --- Supporting evidence for t4 distribution --- p.33 / Chapter B. --- Implications for the application of t4 distribution --- p.34 / Chapter 3.5. --- Section Summary --- p.35 / Chapter CHAPTER 4. --- EVALUATION SCALE TO ASSESS THE ACCURACY --- p.36 / Chapter 4.1. --- Considerations for parameter selection --- p.37 / Chapter A. --- Outlying errors and system bias --- p.37 / Chapter B. --- Accuracy at different levels of blood pressure --- p.37 / Chapter 4.2. --- Description of selected parameters --- p.38 / Chapter 4.3. --- Theoretical relationship between “new´ح and “old´ح parameters --- p.38 / Chapter A. --- Mathematical relationship --- p.39 / Chapter B. --- Mapping relationship --- p.40 / Chapter 4.4. --- Assessment of accuracy at increasing blood pressure levels --- p.41 / Chapter A. --- Data transformation --- p.41 / Chapter B. --- Experimental study --- p.41 / Chapter 4.5. --- Discussion and application --- p.43 / Chapter A. --- Parameter selection --- p.43 / Chapter B. --- Sample size --- p.45 / Chapter C. --- Accuracy criteria --- p.46 / Chapter 4.6. --- Section summary --- p.47 / Chapter CHAPTER 5. --- FEATURE ORIENTED PROTOCOL DESIGN --- p.48 / Chapter 5.1. --- Rationale of accuracy assessment with BP change --- p.48 / Chapter 5.2. --- Experiment one --- p.49 / Chapter 5.3. --- Experiment two --- p.49 / Chapter 5.4. --- Data analysis --- p.49 / Chapter 5.5. --- Results --- p.50 / Chapter A. --- Experiment one --- p.50 / Chapter B. --- Experiment two --- p.52 / Chapter 5.6. --- Discussion --- p.58 / Chapter A. --- Difference between cuff-less and cuff-based devices --- p.58 / Chapter B. --- Correlation between accuracy and blood pressure changes --- p.58 / Chapter C. --- Inducement of blood pressure change --- p.59 / Chapter D. --- Other factors affect the accuracy --- p.60 / Chapter 5.7. --- Section summary --- p.61 / Chapter CHAPTER 6. --- PROPOSAL FOR THE EVALUATION OF WEARABLE CUFF-LESS DEVICES --- p.62 / Chapter 6.1. --- Scope --- p.62 / Chapter 6.2. --- Purpose --- p.62 / Chapter 6.3. --- Subject selection --- p.63 / Chapter 6.4. --- Main validation --- p.64 / Chapter A. --- Static test --- p.64 / Chapter B. --- Test with blood pressure change --- p.65 / Chapter C. --- Test after a certain period of time --- p.65 / Chapter 6.5. --- Data analysis and reporting --- p.66 / Chapter A. --- Statistical report --- p.66 / Chapter B. --- Graphical representation --- p.67 / Chapter 6.6. --- Conclusion and future work --- p.67 / REFERENCES --- p.69 / LIST OF PUBLICATIONS AND AWARDS --- p.78

During the last quarter of the twentieth century, there has been a significant expansion in the means by which parents in the United States might use technologies to watch their children. Watching and worrying about children are not new to the job of parenthood, but the ways of watching now available to parents represents a change of degree so great as to represent a change in kind. The parental gaze has become technologized. This dissertation investigates what happens when man-made devices insert themselves into this most basic of human endeavors. Parenting desires, social expectations, and technological capacities have co-evolved in the United States to a point where the norms of parental watching are increasingly technology-based. This is a "mixed methods," cross-case study. It delves into the particulars of three distinct media while looking for patterns of use and effects across the different technologies. The core of this investigation is three case studies of particular surveillance technologies that all came to prominence, in terms of their popularity or frequency of use, in the United States in the last thirty years. The three subjects of these case studies--fetal ultrasound, Eisenberg, Murkoff, and Hathaway's 1984 pregnancy advice and guide book What to Expect When You're Expecting, and baby monitors--are all media that offer parents the opportunity to be better and less anxious parents by enhancing their powers of parenting observation. They form an optical--textual--acoustic triad that demonstrates the breadth of media that are enlisted into surveillance practices. These new anxiety technologies change thinking, perceptions, and attitudes. They serve both to introduce new human capacities and to direct and to mold existing capacities. They have also helped to change our ideas of what is possible. A few overarching characteristics of American parental thinking have helped to pushed surveillance to prominence. Middle class American parents of the last quarter of the twentieth century have come to feel that the world is a more dangerous place for their children. They perceive their offspring as more vulnerable to dangers and as less capable of avoiding these dangers on their own. Parents also feel an increased sense of personal responsibility for the safety of their children. It is not that that contemporary parents have warmer or deeper feelings toward their children, but rather that contemporary parents believe that they both can and should control a much broader range of dangers to their children than parents in the past believed they could control. The "anxiety technologies" of this study serve in part to bring home to their users the riskiness of parenting and the vulnerability of the fetus/infant. These technologies have come to promote responsibility expansion, efficiency orientation, and risk focus for parents. While these technologies do provide parents with a great deal more focused information, many of the perceived enhancements in powers to effect outcomes are presumptive, illusory effects of actual increases in information. Information without influence is as likely to contribute to anxiety as to power.

<p>With the increased use of computers in every-day live, the demand for newer and better software is increasing day by day. This advancement has resulted in that many developers are searching for ways to decrease their development time. One approach is to use design patterns when designing applications. Design pattern are acknowledged solutions to known design problems that can be reused over and over again without ever doing the same thing twice. The most recent advancement of identifying design patterns has been within the domain of concurrent systems.</p><p>Design pattern within concurrent systems are of interest in this project because of its young age. Development of concurrent applications has often been compared to constant reinvention of the wheel, because code reuse is very low and solutions to design problems are being rediscovered over and over again. By using design pattern, an attempt is made to avoid that. The question is if design patterns are capable of standing under that load.</p><p>This project takes as a case study the problem of protecting a shared resource in a concurrent application, and implements two different solutions to that problem using a special design pattern. These two implementations are then evaluated, with consideration to certain software quality attributes, in a qualitative way.</p><p>This project shows how a pattern can be used to solve a common synchronization problem. It discusses the nature of design patterns, what needs to be considered when they are implemented and how a pattern language can affect the implementation.</p>

Made available in DSpace on 2014-10-09T12:44:36Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:57:07Z (GMT). No. of bitstreams: 1 07009.pdf: 4378283 bytes, checksum: 79cafd4e124d9349d8fbb819d59b5959 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

The FONT beam-based, intra-train feedback system has been designed to provide beam position stabilisation in single-pass accelerators. A FONT feedback system utilising position information from three high-resolution cavity beam position monitors (BPMs) has been commissioned at the interaction point (IP) of the Accelerator Test Facility 2 (ATF2) at KEK, Japan. The ultimate goal of the feedback in the IP region is to stabilise the low-emittance electron beam to the nanometre level. The operation, optimisation and resolution performance of this IP system forms the subject of this thesis. The IP feedback system makes use of beam position measurements from the BPMs to drive an upstream kicker and provide a local correction. The BPMs have a fast decay time of ~25 ns to allow bunches within the beam train to be resolved. The operation of the IP BPMs, the noise floor, and position sensitivity to phase are discussed in detail. Attempts are made to diagnose an unwanted ~60 MHz oscillation in the cavity signals, which is bunch charge-dependent and thus likely beam generated. The BPM resolution estimate was notably improved from 50 nm to 20 nm using waveform integration in analysis of the BPM signals. A multi-parameter fit was used to address inaccurate calibrations and charge-dependencies to achieve more consistent resolution performance and produce a best-ever resolution estimate for the BPMs of 17.5 ± 0.4 nm. A novel mode of IP beam position stabilisation using two BPMs as input to the feedback has been successfully demonstrated. The beam position was stabilised to 57 ± 4 nm, as measured at an independent BPM. Feedback performance was improved to this level by sampling the waveform to optimise bunch-to-bunch correlation. Analysis suggests correction capability could be enhanced by firmware waveform integration to achieve a measurable beam stabilisation of ~40 nm in the future.

Resumo: Essa pesquisa aborda o tema formação e atuação de monitores de um centro de ciências. Está inserida no contexto de divulgação e educação científica e tecnológica em espaços não-formais. São apresentados dados coletados junto aos monitores do Centro de Ciências de Araraquara (CCA), espaço de educação não-formal e divulgação científica de uma universidade pública paulista. Apresentamos um levantamento bibliográfico sobre a formação dos mediadores de alguns centros e museus de ciências do Brasil e do exterior, bem como o papel atribuído a esses sujeitos nessas instituições e também as contribuições do paradigma do profissional reflexivo para a formação dos monitores. Os sujeitos da pesquisa são os monitores do CCA que participam do programa de visitação escolar monitorada. Os dados nos mostram aspectos sobre as concepções iniciais dos monitores sobre o papel de um centro de ciências na sociedade e sobre os saberes e habilidades necessários a um mediados; sobre o comportamento dos visitantes, as interações sociais que ocorrem durante as visitas escolares, a função do monitor e o seu papel durante a visita, a aprendizagem dos visitantes, os questionamentos dos visitantes, dentre outros elementos, na perspectiva dos monitores. As entrevistas realizadas com os sujeitos forneceram informações significativas sobre o processo de formação de monitores, as expectativas criadas por eles antes da atuação, os momentos mais marcantes decorrentes das ações vivenciadas e sobre o aprimoramento profissional. Uma das ferramentas metodológicas utilizadas foi o Método da Lembrança Estimulada, com o uso de fotos digitais e vídeos das visitas monitoradas realizadas pelos monitores participantes da pesquisa. O Método favorece momentos de reflexão dos sujeitos, o que o torna muito indicado como um recurso metodológico para auxiliar no processo de formação... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The present research is related to the formation and performance of monitors of a science center. The work is inserted in the context of scientific and technological divulgation and education in non-formal spaces. Data collected among the monitors acting on Centro de Ciencias de Araraquara (CCA), a space of non-formal education and scientific divulgation of a public university of the State of São Paulo, are presented. A bibliographic search about the formation of monitors in some centers and museum of science in Brazil and abroad, as well as the role attibuted to these monitors in these institutions and the contributions of the reflexive profession paradigm for the formation of these professional, are reported. The subject of the research is related to the CCA monitors that partipate of a scheduled monitored school visitation program. The data whow the aspects of the initial concepts of the monitors about the role of a science center in the society and the knowledge and abilities required for a monitor, about the behavior of visitors, the social interaction that occur during the visit, the learning process and questions of the visitors, among other subjects, in the monitors' perspective. The interviews carried out with the research subjects gave rise to significant informations about the process of monitor formation, their expectations before each visit, the most remarking moments of their actions during the visits and about their professional development. One of the methodological instruments used during the research was the Stimulated Remembrance Method (SRM), using digital photos and video records of the monitored visits in which the research subjects participated. This Method stimulates moments of reflexion on the research subjects about their actions during the visits, which makes it a powerful instrument in the process of professional development of the monitors in the perspective... (Complete abstract click electronic access below) / Orientador: Luiz Antonio Andrade de Oliveira / Coorientador: Martha Marandino / Banca: Douglas Falcão Silva / Banca: João José Caluzi / Mestre

abstract: Having accurate measurements of sedentary behaviors is important to understand relationships between sedentary behaviors and health outcomes and to evaluate changes in interventions and health promotion programs designed to reduce sedentary behaviors. This dissertation included three projects that examined measurement properties of wearable monitors used to measure sedentary behaviors. Project one examined the validity of three monitors: the ActiGraph GT3X+, activPAL™, and SenseWear 2. None of the monitors were equivalent with the criterion measure of oxygen uptake to estimate the energy cost of sedentary and light-intensity activities. The ActivPAL™ had the best accuracy as compared with the other monitors. In project two, the accuracy of ActiGraph GT3X+and GENEActiv cut-points used to assess sedentary behavior were compared with direct observation during free-living conditions. New vector magnitude cut-points also were developed to classify time spent in sedentary- and stationary behaviors during free-living conditions. The cut-points tested had modest overall accuracy to classify sedentary time as compared to direct observation. New ActiGraph 1-minute vector cut-points increased overall accuracy for classifying sedentary time. Project 3 examined the accuracy of the sedentary sphere by testing various arm elevation- and movement-count configurations using GENEActiv and ActiGraph GT3X+ data obtained during free-living conditions. None of the configurations were equivalent to the criterion measure of direct observation. The best configuration of the GENEActiv was: worn on the dominant wrist at 15 degrees below the horizontal plane with a cut-point <489 for each 15-second interval. The best configuration for the ActiGraph was: worn on the non-dominant wrist at 5° below the horizontal plane with a cut-point of <489 counts for each 15-second interval. Collectively, these findings indicate that the wearable monitors and methods examined in this study are limited in their ability to assess sedentary behaviors and light intensity physical activity. Additional research is needed to further understand the scope and limitations of wearable monitors and methods used to assess sedentary behaviors and light intensity physical activity. / Dissertation/Thesis / Doctoral Dissertation Physical Activity, Nutrition and Wellness 2017

Made available in DSpace on 2014-10-09T12:34:36Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:00:37Z (GMT). No. of bitstreams: 0 / Dissertação (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

Made available in DSpace on 2014-10-09T12:54:50Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:06:58Z (GMT). No. of bitstreams: 0 / Dissertação (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

Made available in DSpace on 2014-10-09T12:44:36Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:57:07Z (GMT). No. of bitstreams: 1 07009.pdf: 4378283 bytes, checksum: 79cafd4e124d9349d8fbb819d59b5959 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP